[TriLUG] rw and ro SSD partitions - Was [Re: [SUCCESS] [eee] post-install, grub OK from external stick but not from internal SSD]

[Joseph Mack NA3T]

On Sat, 26 Apr 2008, Alan Porter wrote:

> (1) They format the SSD as two partitions: a read-only 
> "factory" partition and a read-write "user" partition. 
> These are mounted using unionfs.

I've got a WRT54GS running DD-WRT. It has

a writable jffs partition,

a ro partition which I haven't been able to figure out how 
to write in case I want to upgrade the device (don't have 
the device nearby, so don't know the fs). I can update this 
partition using an update tool which downloads files from 
the DD-WRT repository, but I don't know how they change to 
rw and then back to ro.

a ramfs partition, which gets loaded from files in the jffs 
partition on startup (the crontabs are in the ramfs 
partition).

At least that's how I think it works. There may be more to 
it as files I expected to disappear on shutdown (I thought 
in the ramfs) are still there on reboot.

I assume the ro and the rw partitions are using the same 
SSD. How are they making one partition ro and another rw?

THanks Joe

-- 
Joseph Mack NA3T EME(B,D), FM05lw North Carolina
jmack (at) wm7d (dot) net - azimuthal equidistant map
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